Question: Rank in order, from largest to smallest, the thermal efficiencies 1 to 4 of the four heat engines in FIGURE Q21.5. Explain. Hot

Rank in order, from largest to smallest, the thermal efficiencies η₁to η₄of the four heat engines in FIGURE Q21.5. Explain.

Hot reservoir Hot reservoir 10 J 100 J 4 J 2 40

Hot reservoir Hot reservoir 10 J 100 J 4 J 2 40 J 6J 60 J Cold reservoir Cold reservoir Hot reservoir Hot reservoir 10 J 100 J 3 6 J 4 6J V4J 94 J Cold reservoir Cold reservoir FIGURE Q21.5

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